ConsFirst / Smart rings

Amazfit

Amazfit Helio Ring: the downsides first

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#7 of 8
$No-subscription ringiPhone and AndroidScore 2.7/5
21%
of Amazon ratings are 1–2 stars
(checked 2026-10-10)Small sample: 140 ratings. A separate size 10 listing (B0D5LCCLWS, 145 ratings) shows 34% 1-2 stars.

Experts disagree. Tom's Guide calls it the best cheap ring, comfortable and tough, though it warns Amazfit's patent dispute with Oura could affect sales and support. WIRED lists it under 'avoid' for inaccurate heart rate, about three days of battery and a confusing app. Amazon owners also report short battery life.

Subscription: Optional: no fee for core tracking; Aura AI ($70/yr) and Fitness ($30/yr) add-ons are sold separately (WIRED)

Top complaints

What owners love

Good for
  • Amazfit watch owners (it merges data with the watch)
  • A low price with no required fee
  • Sizes 8, 10 or 12

Scores (tap for why)

What experts say

  • Tom's Guide: Best cheap smart ring, with a disclaimer that Amazfit's legal dispute with Oura could lead to removal from sale or end of support.
  • WIRED: Listed under 'Avoid': inaccurate, no automatic workout tracking, about three days of battery, and confusing paid add-ons.
Check price on AmazonWe don't list prices — they change daily. Paid link.

If that catch is a deal-breaker

Highly ranked smart rings whose biggest complaint is something else.

#1 in smart ringsOura Ring 5

The top pick at WIRED, PCMag, Tom's Guide, ZDNET and CNET: 40% smaller than the Ring 4, comfortable, with accurate sleep and stress tracking and about 10 days of battery in PCMag's test. The catch is the $399 price plus a $6-a-month membership that WIRED says still feels mandatory, and sizes stop at 6-13.

Its catch: membership on top of a $399 ring#2 in smart ringsOura Ring 4

Still sold alongside the Ring 5 and getting the same software updates, it's PCMag's Best Value pick and Wirecutter's top sleep tracker. But it's bulkier than the Ring 5, needs the same membership, and 1 in 5 Amazon ratings are 1 or 2 stars, often over battery life and rings that fail within a year.

Its catch: battery and reliability problems#3 in smart ringsUltrahuman Ring Pro

Ultrahuman's redesigned ring is sold in the US at $479 after the Ring Air was blocked over an Oura patent (CNET, Engadget). It offers 10+ days of battery and a feature-rich charging case. Engadget rates it 8.9/10, but ZDNET gives it 3/5, calling it chunky and more expensive than the Oura Ring 5.

Its catch: chunky, with protruding sensors

See all 8 smart rings ranked →